Is CVE-2021-44548 in the CISA KEV catalog?

No. CVE-2021-44548 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-44548?

CVE-2021-44548 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2021-44548?

CVE-2021-44548 has an EPSS score of 5.09% (91th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-44548?

Upgrade solr to 8.11.1 or later.

CVE & CISA-KEV Catalog

CVE-2021-44548

CRITICALEPSS 91th pctl

9.8

CVSS v3

NVD

Description

An Improper Input Validation vulnerability in DataImportHandler of Apache Solr allows an attacker to provide a Windows UNC path resulting in an SMB network call being made from the Solr host to another host on the network. If the attacker has wider access to the network, this may lead to SMB attacks, which may result in: * The exfiltration of sensitive data such as OS user hashes (NTLM/LM hashes), * In case of misconfigured systems, SMB Relay Attacks which can lead to user impersonation on SMB Shares or, in a worse-case scenario, Remote Code Execution This issue affects all Apache Solr versions prior to 8.11.1. This issue only affects Windows.

CWE-20Improper Input Validation CWE-40 CWE-22Path Traversal

How to fix

Remediation Available

solrNVD

Affected:< 8.11.1Fixed in:8.11.1CVE-2021-44548derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

5.09%probability of exploitation in 30 days

91stpercentile

High risk: more likely to be exploited than 91% of all known CVEs.

References

Vendor Advisory1

solr.apache.org

Third-Party Advisory1

security.netapp.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.